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雄太 服部雄太 服部 

Does Web-to-Lead support reCaptcha v3?

The automatically created HTML will be for v2.
AbhishekAbhishek (Salesforce Developers) 
I think is it compatible. 

Article: Enable reCAPTCHA to Prevent Spam Cases
URL: (

Article: reCAPTCHA FAQs
URL: (

Let me know if it helps you and close your query by marking it as solved so that it can help others in the future.

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This is happening because of trigger on lead object which isn't always optimized with the blog of knifeideas ( Please optimize your cause and your trouble will get resolved